html,
body {
    margin: 0px;
    height: 100%;
    width: 100%;
}

.container {
    width: calc(50% - 2px);
    height: calc(100% - 2px);
    float: left;
    border : 1px solid;
}

#map1 {
    width: calc(50% - 2px);
    height: calc(100% - 2px);
    float: right;
    border : 1px solid;
}
